Piston lower crown

FIG. 1 is a perspective view of the piston lower crown;

FIG. 2 is a side view of the piston lower crown looking transversely to a pin bore axis;

FIG. 3 is front view of the piston lower crown looking along the pin bore axis; and,

FIG. 4 is a bottom view of the piston lower crown.

The broken line portions of the piston are for the purpose of illustrating environmental piston structure and forms no part of the claimed design.

We claim the ornamental design for a piston lower crown, as shown and described.

Number	Name	Date	Kind
1336690	Flammang	Apr 1920	A
1336691	Flammang	Apr 1920	A
1351238	Flammang	Aug 1920	A
1387593	Crispin	Aug 1921	A
1758444	Jehle et al.	Mar 1922	A
1592874	Udate	Jul 1926	A
1719092	Taylor	Jul 1929	A
1759110	Graves	May 1930	A
1783477	Mansfield	Dec 1930	A
1961886	Larger	Jun 1934	A
2032849	Nelson	Mar 1936	A
2046789	Norton	Jul 1936	A
2147956	Alexandrescu	Feb 1939	A
D122922	Flammang at al.	Oct 1940	S
D138548	Toce et al.	Aug 1944	S
3307456	Etienne	Mar 1967	A
3906923	Harker	Sep 1975	A
4354426	Steidle	Oct 1982	A
D286780	Collyear et al.	Nov 1986	S
D286781	Collyear et al.	Nov 1986	S
D287599	Murray	Jan 1987	S
4674399	Bruni	Jun 1987	A
4691622	Sander et al.	Sep 1987	A
4702151	Munro et al.	Oct 1987	A
4704949	Foster	Nov 1987	A
4715267	Richmond	Dec 1987	A
4809652	Essig et al.	Mar 1989	A
4876947	Rhodes	Oct 1989	A
4989559	Fletcher-Jones	Feb 1991	A
D322969	Ballheimer et al.	Jan 1992	S
D373773	Hund, Jr.	Sep 1996	S
D377493	Oda et al.	Jan 1997	S
D383761	Huntzinger	Sep 1997	S
D399212	Roderweiss et al.	Oct 1998	S
6526871	Zhu et al.	Mar 2003	B1
6845741	Saruwatari et al.	Jan 2005	B2
D609247	Naegele et al.	Feb 2010	S